Shorelines shaded in green are under a high-surf warning. Shorelines shaded in purple are under a high-surf advisory. Areas shaded in red are under a red-flag alert. Areas shaded in brown are under a wind advisory. Waters shaded in purple are under a small-craft advisory; waters shaded in dark purple are under a gale warning.

NWS Honolulu chart

The National Weather Service says strong trade winds are expected to continue through today.

The weather service says a high pressure system north of the Islands will drive 15- to 30-mph trades, with higher gusts.With the state in a drought, the strong winds have prompted the weather service to issue a red-flag warning.A red-flag warning means the combination of dry brush, warm temperatures and strong winds can create conditions with rapid fire growth potential. Residents in dry areas are urged to be vigilant in the event of fires.The warning is in effect until 6 a.m. tomorrow.A wind advisory also is in effect for parts of the state because of the gusting trades.In addition, big waves are also in the forecast, with warning-level surf for most north-facing shores and advisory-level surf on west-facing shores. A high-surf advisory is in effect for north-facing shores on the Big Island.On the seas, a gale warning has been issued for waters around the Big Island. ———On the Net: www.prh.noaa.gov/hnl/